package wrapper;

public class IntegerDemo {
    public static void main(String[] args) {
        int max = Integer.MAX_VALUE;
        int min = Integer.MIN_VALUE;
        System.out.println("int最大值为："+max+",最小值为："+min);

        long max1 = Long.MAX_VALUE;
        long min1 = Long.MIN_VALUE;
        System.out.println("long最大值为："+max1+",最小值为："+min1);

        String s1 = "40";
        int a = Integer.parseInt(s1);
        System.out.println(a);






        /*Integer i = Integer.valueOf(5);
        int i1 = i.intValue();

        Integer i2 = 5;
        int i3 = i2;
         */
        /*Integer i1 = new Integer(5);
        Integer i2 = new Integer(5);
        System.out.println(i1==i2);
        System.out.println(i1.equals(i2));

        Integer i3 = Integer.valueOf(5);
        Integer i4 = Integer.valueOf(5);
        System.out.println(i3==i4);
        System.out.println(i3.equals(i4));
         */
    }
}
